C++23 support on Bela Gem

jeanlouppecquais

Hello everyone,

I'm trying to compile so c++ code I have written on the Bela. My biggest issue is that I use some feature of c++23, like mdspan, and it seems that the included version of gcc or clang do not support c++23.

Is it possible to update them ?

Thank you very much !

giuliomoro

It's just a Debian distro, so you have a few options, in descending order of convenience:

see if the compiler version is available via debian backports*
download pre-built aarch64-linux binaries from here and update the CLANG_PATH or CXX in the Makefile (this can be done, e.g.: by adding a file CustomMakefileTop.in in /root/Bela containing CLANG_PATH=/path/to/clang+llvm-18.1.8-aarch64-linux-gnu/bin/clang).
do a full Debian distro upgrade to the most recent Debian distro that supports the compiler of choice. This may break some packages (e.g.: our custom kernel?) that may have to be fixed afterwards *

* These options require the board to be connected to the internet, either via a dongle or by internet sharing from the host

jeanlouppecquais

Thank you giuliomoro ! I'll give it a try asap 😉

jeanlouppecquais

Hello there !
So, actually, my issue was much simpler to solve than I expected.
Because I use zig compiler to crosscompile to bela, I was able to simply upgrade to GCC 16.1 in the crosscompile toolchain. Because we link statically anyway, no need to change anything on the Bela.

And it works absolutly fine !